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Field system: The object of the field system is to make a uniform magnetic field, within which the armature rotates. It consists of four parts- yoke, pole core, pole shoe and field -coils. The yoke acts as a frame of the machine and carries the magnetic flux formed by the poles. In small machines cast iron yokes are used, but for large machines yoke is made using fabricated steel.
Laboratory steelyard To make a steelyard weighing to 500 g use a wooden lath only one metre long balanced on a strong sewing needle stuck by it 3mm from its upper edge and 12 c
A substance has constant heat capacity C P = 3.5R and its equation of state is given by: P (V-cRT) = RT where c = 5 * 10 -7 m 3 /J. This substance is isentropically compre
why is the colour of sky blue
new ideas for physics projects ?
(1) Melting point : 936 0 C (2) Atomic number : 32 (3) Energy gap : 0.6ev (4) It is a gray metallic looking mat
Q What is Seebeck effect? Seebeck revealed that in a circuit consisting of two dissimilar metals like iron and copper an emf is developed when the junctions are maintained at
suppose you are running and want to stop at once. surely you will have to produce negative acceleration in your speed. can you tell from where does the necessary force come ?
how much force is necessary to stop the car when steps on a brake a 1000-kg car travelling at 65 km/h if the braking distance is 35 m?
If Young' two slit interference experiment is done with white light what could be seen?
Figure shows a simple model of spring-mass system. The mass is released from the rest with the springs un-stretched. It's downward acceleration is a=9.81 - 15.24y m/s 2 where y is
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